Question

solue 2x²+x-3=0 using formula method.

Answer 1

Step-by-step explanation:

2x²+x-3=0

a=2;b=1;c=-1

D=b²-4ac

D=(1)²-4(2)(-1)

D=1+8

D=9

√D=3

x=(-b+-√D)/2a

x=(-1+-3)/2(2)

x=(-1+-3)/4

x=(-1+3)/4 or (-1-3)/4

x=1/2 or -1